What is the type of digestive system in molluscs?

What is the type of digestive system in molluscs?
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Molluscs present extracellular digestion and a complete digestive system, with mouth and anus.
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Description : Mollusc identity card. How are molluscs characterized according to examples of representing beings, basic morphology, type of symmetry, germ layers and coelom, digestive system, respiratory system, circulatory system, excretory system, nervous system and types of reproduction?

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How is the excretory system of molluscs characterized?

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What are examples of the ecological and economic importance of molluscs?

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Octopus and squid belong to the class of molluscs known as: a) cephalopoda (pron: sef-eh-lah-pod-ah) b) bivalvia c) gastropoda (pron: gas-tro-pod-ah) d) polyplacophora (pron: poly-pla-so-for-ah)

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